Sixteen volunteers, ages 20
to 24, took a fitness test to determine a baseline rating of perceived exertion
(RPE). Participants were
instructed on proper usage of the game and played various Wii games while
researchers monitored oxygen intake, heart rate and RPE.
The study, led by John
Porcari, Ph. D., and Alexa Carroll, M.S., focused on six different
activities—Free Run, Island Run, Free and Advanced Steps, Super Hula Hoop, and
Rhythm Boxing.
Volunteers participated in
each of the six activities randomly for 6 minutes. The Free and Island Run
exercises required more energy, but neither used enough to meet the American
College of Sports Medicine’s standard to affect cardio endurance. The other activities fell below these
health guidelines as well.
All of the activities did,
however, burn calories. In 30 minutes, each activity burned the following
number of calories:
- Free Step, 99 calories
- Advanced Step, 108 calories
- Super Hula Hoop, 111 calories
- Boxing, 114 calories
- Free Run, 165 calories
- Island Run, 165 calories
Although these exertion
levels are significantly lower than doing similar exercise without the game,
Wii Fit still used twice the calories of other video games. This is enough
exertion to be considered a very mild workout.
“I guess anything is better than
nothing,” Porcari says, “ but we were a little bit underwhelmed by the
intensity of some of the exercises.”
An earlier study showed that
certain Wii Sports activities burned more calories.
“You’re better off doing Wii
Sports than Wii Fit,” Porcari explains. “In Wii Sports there’s more jumping
around, and you’re not constrained by having to stand on the balance pad. I
think there’s much more freedom of movement and you get a better workout.”
Thirty minutes each of Wii
Sports activities burned the following number of calories:
- Wii Baseball, 84 calories
- Wii Golf, 93 calories
- Bowling, 117 calories
- Tennis, 159 calories
- Boxing, 306 calories
These findings could cut pounds for gamers in the long run, Carroll says, but it’s best not to rely on Wii alone. “Since using the Wii Fit alone may not produce results that meet recommended physical activity guidelines it is important that individuals participate in additional exercises to effectively reach these guidelines,” she says.
Read more about the Wii Fit and Wii Sports studies.
“A cough is one of the
most common symptoms of illness and a common mode of disease spread,” says
researcher Suzanne Smith, PhD, of STAR Analytical Services. “Yet we don’t use
technology in any way to measure or understand what coughs mean.”
The program is designed to
distinguish different coughs using acoustic vocalization analysis, a way to distinguish
different audio tones. Researchers hypothesize that the sound of coughing
varies by illness, and that these subtle differences may be enough to determine
which illness a patient has.
If this is true, it could
mean greater accessibility to medical services for individuals who live far
from a doctor. An early diagnosis would also help determine what treatments are
necessary and ensure that patients receive the proper medications they need to
recover.
Efforts are currently
focused on pneumonia, a disease that kills 1.8 million children every year. Most of them live in developing countries. Software capabilities, if initially
successful, are likely to grow. Cell phones could potentially be used to
diagnose everything from the common cold to influenza.
The project is in its
beginning stages, but the possibility of such a program could save millions of
lives, not to mention billions of dollars in health care costs.
Dr. Tachi Yamada, president of the Global Health Program says that this is the exact sort of thinking it will take to tackle the world’s health challenges.
"I'm excited about their ideas and look forward to seeing some of these exploratory projects turn into life-saving breakthroughs," he says.
Dr. Ramón Estruch of the University of Barcelona’s
Department of Internal Medicine was the study’s senior author. Estruch and his
team asked 42 high-risk men and women age 55 or older to take part in an
experiment examining the effects of cocoa on heart disease.
“Cocoa and its derived products, such as chocolate,
represent a very rich source of dietary flavonoids, which contain a higher
content per serving than tea or red wine,” authors write. “The health benefits
associated with cocoa consumption have been related to their capacity to
improve the lipid profile and insulin sensitivity, diminish blood pressure,
reduce platelet activity and function, and ameliorate endothelial dysfunction.”
Participants were given two sachets of non-fat, sugar-free
Cola Cao, a popular Spanish cocoa powder mix similar to Nesquik. They were to
mix 20 g (about 1 ½ Tbs.) with 250 ml (~8.5 oz) of skim milk and drink twice
daily—once with breakfast, and again with dinner or an afternoon snack. All
participants followed a Mediterranean-style diet, but were asked to exclude
foods with cocoa, olive oil, red wine, tea, or fruits and vegetables with high
polyphenol levels.
Participants did have a slight weight gain of about 1 pound.
Total cholesterol and triglyceride levels were slightly (although not
significantly) lower. Cocoa did,
however, show anti-inflammatory effects. These were modest compared to those of
red wine, but significant nonetheless.
HDL (good cholesterol) levels were also significantly higher
after drinking chocolate milk.
“Our results suggest that regular consumption of nutritional doses of cocoa may have an effect on all initial phases of the atherosclerotic process in subjects at high risk of coronary heart disease,” authors wrote. “These anti-inflammatory effects, together with other previously reported effects, including those of antioxidant, anti-platelelet, and positive vascular effects, may contribute to the overall benefits of cocoa consumption against atherosclerosis.”
The study appears in the American Journal of Clinical Nutrition.
“In the past
decade, the decline in carbohydrate quality has been identified as a
likely culprit leading to increased adiposity and metabolic
disorders among children and adults,” authors write.
Eighty-five overweight Latino children from the Los Angeles
area were asked to participate in the study. Selection criteria included having
a family history of type 2 diabetes, likelihood of insulin resistance and
pre-diabetes. The children were between the ages of 11 and 17, a stage when
most begin developing eating habits. Researchers measured weight and body
composition. The children then underwent two trial periods to monitor the
effects of sugar and fiber intake.
The first trial lasted 16 weeks. Roughly one in three
children who reduced their added sugar intake had improved insulin secretion.
In this group, participants who consumed more fiber had a 10 percent reduction
in visceral adipose tissue (body fat).
The second trial was based on 24-hour self-reported dietary
recalls—two each year for two years. Although sugar intake didn’t have a
significant effect, fiber continued to produce positive results.
“Although the healthy reputation of dietary fiber
continues to grow, national data consistently show that children
consume less than one-half of the recommended amount of dietary
fiber,” authors write.
In addition to increasing insulin sensitivity, consuming
more fiber appeared to lower body mass. An decrease in dietary and insoluble
fiber intake increased fat tissue by 21 percent, compared with a 4 percent fat decrease
in children who consumed more.
Those consuming more fiber ate
more non-fried vegetables, fruit and legumes—all excellent sources of both
dietary and insoluble fibers. Other sources include nuts and seeds, whole
grains, and wheat bran.
The study provides great encouragement for individuals wishing to lose weight and improve metabolism. According to authors, even a small change could make a big difference:
"These findings suggest that fairly modest increases in fruit and vegetable intake of 1 or 2 servings and bean intake of 0.5 servings (equivalent to 1/4 cup) daily could have profound effects on lowering visceral adiposity and subsequent related metabolic disorders."
Former studies have shown that using cleaning products with
citrus scents can help motivate cleaning-related tasks as well as keeping a
cleaner dining environment. In much the same way, cleanliness is associated
with physical purity and moral purity.
“By demonstrating that the association between morality and
cleanliness is bidirectional, the current research identifies an unobtrusive
way—a clean scent—to curb exploitation and promote altruism,” authors wrote.
The first experiment was a trust game designed to test
integrity. Twenty-eight participants were assigned to either a scented (with citrus
Windex) or an unscented room. For the game, participants acted as receivers.
The senders, who they believed to be other study participants in another room,
invested $4.
Research assistants told the receivers that the investment
had tripled, and it was up to the receiver to decide how the money should be
split. They could decide to say the investment was unsuccessful and keep a
portion or the entire amount, or they could choose not to exploit the sender
and split the money fairly.
Individuals from the scented rooms acted more honestly than
those from unscented rooms. They returned almost twice the amount of cash, an
average of $5.33 versus $2.81 for individuals from unscented rooms.
In a second experiment with 99 undergraduate students,
participants were again assigned randomly to scented or unscented rooms. This
time participants were given a packet of unrelated tasks to work on, one of
which was for Habitat for Humanity. Participants indicated interest in
volunteering as well as donating money to the charitable organization.
To control for variations in mood, participants took a
version of the PANAS (Positive Affect Negative Affect Schedule) test. In
addition to showing more interest in volunteering, the experimental group was
also 16 percent more willing to donate than baseline counterparts.
“The link from cleanliness to virtuous behavior appears to be a nonconscious one,” authors write. “In neither experiment did participants recognize an influence of scent on their behavior, and in Experiment 2, perceived cleanliness did not differ by condition nor correlate with the effects."
Much of the effect depends on whether or not the smell is pleasing to the individual. Researchers want to further investigate the different effects scents have on a person's moral behavior.
Looking for more information about general well-being? Visit Healia's Health and Wellness Community.
Forty-two percent of the
women in the study trying to conceive experienced infertility, but pregnancy
was more likely for women who became obese after age 18. The good news is,
surgical weight loss may increase fertility.
The study, the Longitudinal
Assessment of Bariatric Surgery (LABS), provided information on the fertility
of obese women considering surgical weight loss procedures.
Obesity can interfere with a
woman’s hormone levels, making it difficult to become pregnant. This also makes
vitro procedures less likely to work. Even in the event of conception, there
are major health risks to both mother and child. Not only are miscarriage rates
higher, but there are also a higher rates of premature and still-births.
Weight loss surgery, also
known as bariatric or metabolic surgery, which includes gastric bypass surgery
and lap banding, may help obese women trying to conceive. Many women don't
know that having such a procedure is an option.
Research shows that
bariatric surgery can reduce pregnancy complications for obese women, and LABS
participants were no exception. Roughly 62 percent of LABS participants who
underwent surgery who hoped to conceive experienced at least one live birth
after infertility.
After weight loss surgery,
doctors advise women to wait at least 18 months after surgery (6 months after
banding) before trying to become pregnant. They also suggest using
contraceptives while waiting for the body to become more stable.
“As the incidence of obesity
increases in the United States, women’s health care practitioners are likely to
care for a substantial number of patients who will undergo bariatric surgery,”
says Dr. William Gibbons of the American Society for Reproductive Medicine. “Studies
like this one are extremely useful to help us determine how to advise these
patients and best meet their needs.”
Find more information about
pregnancy after bariatric surgery, or test your knowledge with Healia’s
Pregnancy Quiz.
After menopause,
many women experience weight gain, which increases the risk of developing
metabolic conditions. For women with type 2 diabetes, weight loss and glucose
management can become extremely difficult to manage. Researchers found that
both CLA and safflower oil proved particularly beneficial to postmenopausal
women with type 2 diabetes.
CLA, conjugated
linoleic acid, is an unsaturated fatty acid found primarily in meat and dairy
products of cows, goats and sheep. CLA has been known to help people wishing to
build muscle, lose weight and prevent heart disease.
Safflower oil is a
plant-based oil similar to sunflower oil that is used in cooking oils, salad
dressings and some margarines. Safflower oil, SAF, is a colorless and
flavorless source of omega-6 fatty acids, and has been known to promote
healthier skin and hair, reduce cholesterol and boost the immune system.
Thirty-five women
completed a 36-week study comparing the effects of CLA and safflower oil on
weight and body mass. Each supplement was consumed for sixteen weeks. Participants
took roughly two teaspoons of either oil daily.
CLA began to cut
body fat and reduce BMI after just eight weeks. “This magnitude of reduction
has not been reported in an intervention that used a linoleic acid-rich oil,”
wrote lead authors Martha Belury and Leigh Norris, both from the Department of
Human Nutrition at OSU.
Safflower oil,
originally meant for baseline comparison, yielded exciting changes of its own.
Safflower oil reduced trunk mass and increased lean muscle mass, resulting in
an average loss of 6.3 percent of body fat. It also reduced insulin resistance
and fasting blood glucose levels.
“I never would have
imagined such a finding,” Belury says. “This study is the first to show that
such a modest amount of linoleic acid-rich oil may have a profound effect on
body composition in women."
Belury and
associates are pleased with the results of their study, and hope to explore the
effects further. They believe that CLA and safflower oil show great promise in
weight and glucose management for women with type 2 diabetes.
“It is possible
that further reductions in BMI are achievable with a longer length of
supplementation,” the authors wrote. “The use of lower doses of CLA over longer
durations of intervention may prove to be an effective weight-loss aid."
The study appears online in The Journal of Clinical Nutrition.
“While economic expansions bring with them
increases in employment, greater optimism, and higher incomes (although not
always and not for all sectors of the population), recessions are of periods of
pessimism, shrinking, and social malaise,” study authors Jose A. Tapia Granados
and Ana V. Diez Roux wrote. How, then, could this improve health?
Granados and Diez believe this may be due, in part,
to the stress factors associated with economic boom. During times of economic
prosperity, employees carry a much heavier workload. Higher occupational
demands require workers to work quickly and put in more hours, which can cause
greater stress and greater alcohol and tobacco consumption. There are also
higher rates of cardiovascular problems during periods of expansion. There is
less to do during times of economic downturn, which would eliminate many of
these problems.
To examine the effects of recession on health and
life expectancy, Granados and Diez reviewed mortality rates during the Great
Depression. “Mortality tended to peak during years of strong economic
expansion,” the authors wrote. “In contrast, the recessions of 1921, 1930-1933
and 1938 coincided with declines in mortality and gains in life expectancy.”
In 1932, at the height of the depression, nearly 23
percent of the U.S. population was unemployed. Life expectancy at this time was
63.3 years, up over six years from 57.7 in 1929. Not only did the weak economy
seem to prolong life, but there was also a decline in tuberculosis cases,
traffic accidents and pollution.
Overall statistics were consistent across age
groups, gender, and whites and nonwhites, but the latter group saw the most
benefit. “Nonwhite males lost 8.1 years of life expectancy between 1921 and 1926,
and females lost 7.4 years (a brief period of expansion),” authors wrote. “In
contrast, during the Great Depression nonwhites gained 8 years of longevity.”
Suicide rates rose during the Great Depression,
accounting for less than two percent of all deaths. The economic crisis of the
1920s and 30s also saw higher rates of infant mortality and malnutrition in
areas with extremely high unemployment rates, but people generally lived
longer, healthier lives.
If this pattern holds true today, they say it’s
possible current economic conditions could give Americans up to two additional
years of life: “Although social science is not physics, regularities in the
past allow us at least some confidence in forecasting the future.” They also
stress that although this information is promising, the negative effects of anxiety and hopelessness can still take a toll on a person’s health and well-being.
Granados and Diaz plan to continue their research. They explain, “A better understanding of the beneficial effects of recessions on health may perhaps contribute to the development of economic policies that enhance health and minimize or buffer adverse impacts of economic expansions.”
Today marks the last day of Mental Illness Awareness Week,
first recognized by Congress in 1990. The first week of October has since been
used to raise awareness about mental health issues. As fall approaches,
seasonal affective disorder may be one issue to look out for.Seasonal affective disorder (SAD) is a common mood disorder that occurs in autumn and winter. The reduced sunlight during these months causes the body to fall out of its natural rhythm. People with the disorder may feel drained, depressed, or lack interest in normal activity, among other symptoms.
Not to worry, though. These five tips may help you lose those winter blues:
According to the National Alliance of Mental Illness (NAMI), as many as 26 percent of adults and 10 percent of children living in the U.S. are directly affected by a mental health disorder every year. Mental illness affects everyone, but it doesn’t have to wreak havoc on your life. Taking extra steps toward positive mental health can keep a smile on your face this season.
Information comes from a recent study published in Circulation, a journal of the American Heart Association. The study is a compilation of nine previously published research articles on the topic. The study notes a decrease in the risk of AMI (acute myocardial infarction), another name for a heart attack.
“The risk of AMI falls rapidly after smoking cessation,” wrote study authors James M. Lightwood, Ph. D, and Stanton A. Glantz, Ph.D. And even those who never light up themselves benefit. “The effects of secondhand smoke (SHS) on many biological mediators that lead to heart disease occur rapidly and are nearly as large as those of smoking.”
Research showed an estimated 15 percent decline in the incidence of heart attacks in the first year of smoking bans alone. Three years following enforcement of the laws saw an even greater decline, roughly 36 percent, with a 40 percent drop in Montana.
Research from five European countries that have adopted similar policies was also examined in this study. Heart attack rates fell a full 11 percent in just two months following a ban on smoking in Italy. Similar statistics were found in Ireland.
“Secondhand smoke (SHS) increases the risk of acute myocardial infarction (AMI) by 25% to 31% (1–5),” researchers* from the Kansas University School of Medicine’s Division of Cardiovascular Diseases write. “In countries where smoking prevalence is high, for example, Britain 50%, Europe 62%, and Greece 156%, versus 22% in the U.S., AMI in nonsmokers is particularly increased.”
Individuals who ceased smoking after the laws went into effect were not accounted for, and most of the statistics come from restaurant workers. Although this somewhat limits the data, researchers believe rates are underestimated and expect this trend to continue exponentially as more legislation goes into effect.
Authors of the study write, “Passage of strong smoke-free legislation produces rapid and substantial benefits in terms of reduced AMIs and that these benefits grow with time.”
*David G. Meyers, M.D, M.Ph.; John S. Neuberger, DRPH, M.Ph.; M.B.A., and Jianghua He, Ph.D
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